W&T Interfaces
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RS232 Universal Serial Buffer, 4MB

Lataa käsikirja ( Manual)

Charge administration on the PC

RS232 Universal Serial Buffer

RS232 Universal Serial Buffer

Product properties:

  • Non-volatile buffering of serial data:
    • Print and plot data
    • Telephone fee information
    • machine data
    • etc...
  • Data back channel allows connection of bi-directional peripheral devices
  • Both ports can be configured independently of each other
  • Conversion of baud rate, data format and handshake protocol possible:
  • Addition of RS422, RS485 or 20mA interface modules available on request
  • Integrated diagnostic and startup aid: Setting dump

Application example "Buffer storing fee and call data":
Telephone systems provide fee data with each conversation, which are output directly on the RS232 port of the telephone equipment. Processing this data used to require that a PC with a running receiving program be continuously connected and turned on in order to be able to receive this fee data. The telephone equipments itself generally does not have sufficient buffer storage capacity. The serial buffer takes the call data as long at is queried by the PC. The PC may in the meantime be turned off or used for other purposes. The buffer stores the data in a non-volatile memory, so that power failures do not result in loss of the valuable data. To query the buffer from the PC, use either our small software tool, which generates text or Excel files, or integrate the 3-byte query sequences directly into your fee calculation software.

Application example "Transport of serial machine data":
Computers and data handling machines cannot always be connected directly using a serial data cable. Data transfer via floppy disk, CD or USB memory stick is also often unsuitable (due to incompatibility or because a device does not have the proper connection option) or undesirable (due to virus transmission). In these cases the RS232 Universal Serial Buffer can be used as a transport medium - much like a memory stick with serial RS232 port.

Optional battery pack for Universal Serial Buffer:
For network-independent operation of the buffer (e.g. for loading serial data into a machine which has no nearby power supply available), W&T offers an optional battery pack. The battery is able to supply the buffer with power for approx. 10 hours. In other applications the battery pack can also be used as a mini-USP for the buffer to ensure operation of the device during a power failure.

Technical Data:

Serial ports:    2x RS232, both ports can be configured
independently of each other
Input:   9-pin SUB-D socket with DCE assignment
Output:   9-pin SUB-D male with DTE assignment
Supported signals:   RxD, TxD, CTS, DTR
Baud rate:    150..115,200 baud
Data format:   7,8 data bits, no,even,odd parity
Flow control:   Hardware handshake or
XON/XOFF protocol
Integrated buffer:   4MB flash memory
Operating modes:   Standard print/plot buffer
Fee data buffer
Portable buffer
Power supply:   Included AC adapter or other
potential-free voltage 12..24V AC/DC
Current consumption:   typ. 30 mA at 24V DC
Ambient temperature:   Storage: -40..+70°C
Operating: 0..+60°C with external supply
Housing:   Plastic housing, 105 x 75 x 45mm
Weight:   approx. 500g incl. power adapter
Delivery:   1x RS232 Universal Serial Buffer, 4MB
1x power adapter for application in office